NavigatingCancelEventArgs Class
Definition
Important
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Provides data for the Navigating event.
public ref class NavigatingCancelEventArgs : System::ComponentModel::CancelEventArgs
public class NavigatingCancelEventArgs : System.ComponentModel.CancelEventArgs
type NavigatingCancelEventArgs = class
inherit CancelEventArgs
Public Class NavigatingCancelEventArgs
Inherits CancelEventArgs
- Inheritance
Examples
The following example shows how to handle Navigating to detect whether a request to refresh static content was made, and if one was, how to cancel the request.
void NavigationService_Navigating(object sender, NavigatingCancelEventArgs e)
{
// Don't allow refreshing of a static page
if ((e.NavigationMode == NavigationMode.Refresh) &&
(e.Uri.OriginalString == "StaticPage.xaml"))
{
e.Cancel = true;
}
}
Private Sub NavigationService_Navigating(ByVal sender As Object, ByVal e As NavigatingCancelEventArgs)
' Don't allow refreshing of a static page
If (e.NavigationMode = NavigationMode.Refresh) AndAlso (e.Uri.OriginalString = "StaticPage.xaml") Then
e.Cancel = True
End If
End Sub
Remarks
These event arguments contain information about the navigation that was requested, and are passed to handlers of the Navigating event, which is implemented by the following:
NavigatingCancelEventArgs encapsulates the following details of the navigation request:
Navigation Initiation: NavigationMode, Navigator, IsNavigationInitiator.
Navigation Request: WebRequest.
Navigation State: ExtraData, ContentStateToSave, TargetContentState.
This information allows you to both evaluate the nature of the navigation request, and view and update specified request details before navigation occurs.
Based on the navigation request information provided by NavigatingCancelEventArgs, or based on application-specific state or code, you can completely prevent navigation by setting the Cancel property to true
(by default, Cancel is false
).
Properties
Cancel |
Gets or sets a value indicating whether the event should be canceled. (Inherited from CancelEventArgs) |
Content |
Gets a reference to the content object that is being navigated to. |
ContentStateToSave |
Gets or sets the CustomContentState object that is associated with the back navigation history entry for the page being navigated from. |
ExtraData |
Gets the optional data Object that was passed when navigation started. |
IsNavigationInitiator |
Indicates whether the navigator (NavigationWindow, Frame) that is specified by Navigator is servicing this navigation, or whether a parent navigator is doing so. |
NavigationMode |
Gets a NavigationMode value that indicates the type of navigation that is occurring. |
Navigator |
The navigator that raised this event. |
TargetContentState |
Gets the CustomContentState object that is to be applied to the content being navigated to. |
Uri |
Gets the uniform resource identifier (URI) for the content being navigated to. |
WebRequest |
Gets the WebRequest object that is used to request the specified content. |
Methods
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
ToString() |
Returns a string that represents the current object. (Inherited from Object) |